Question

For the following list of data, calculate (a) the mean, (b) the median, and (c) the mode or modes (if any) 1.8, 5, 6.3, 8 ,8, 4.8, 2.8, 4.8

(a) The mean is

Answer 1

(a) The mean is:

The sum of the values: 1.8 + 5 + 6.3 + 8 + 8 + 4.8 + 2.8 + 4.8 = 41.5

The sum divided by the number of values: 41.5 ÷ 8 = 5.1875

(b) The median is:

The values in numerical order: 1.8, 2.8, 4.8, 4.8, 5, 6.3, 8, 8

The mean of the two middle values: (4.8 + 5) ÷ 2 = 4.9

(c) The mode is:

The values in numerical order: 1.8, 2.8, 4.8, 4.8, 5, 6.3, 8, 8

The values that repeat most often: 4.8, 8 (both appear twice)